. >>> when you've got big news and are bursting at the scene, who do youtell? your mom and dad? >> no. your sister! >> she already knows. sisters know everything. >> surprise for her sister. >> made a little treat. >> i think i might know what might be in here. is it a baby? what is it? >> cookies? >> no cookies? >> buns. what kind of buns? >> baby buns? what's it in? >> the oven. buns in the oven. hamburger buns. >> come on, you can get there. >> good hamburgers for dinner. finally clicks. >> a bun in the oven. >> oh, my goodness. you're pregnant! >> >> finally puts it together, then they show her the sonogram. that progresses, then this happens. >> when we went to our first appointment last week, for us, too. >> uh-oh, somebody else dropped a truth bomb. >> no way! no way! yeah! >> pregnant sisters! >> this selfie has gone viral. it's the most epic of selfies. the most epic of photo bombs, as well. >> how did jonah here get this picture? >> i will show you. that's actually 24-year-old will rosner and he's been sailing for months now. we now have the video that shows you exactl